Dastan Eleukenov: Well, as you know, biological weapons issues turned out to be, in a sense, far more difficult than, let's say, nuclear or chemical weapons issues.
Slava Paperno: Why?
Eleukenov: What I mean is that here it is very hard to determine where civilian research ends and military research begins. It's very difficult... It's very easy to destroy the traces of development work, and very easy at the same time to conceal and preserve some amount of weaponized agents. And then, unlike, let's say, chemical or nuclear weapons, they develop on their own in a nutritional medium.